Adjustable pack frame



FIG. 1 is a rear perspective view of an adjustable pack frame showing a new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right side elevation view thereof, the left side view being a mirror image thereof;

FIG. 6 is another rear perspective view thereof, showing the adjustable pack frame within a pack;

FIG. 7 is another rear perspective view thereof, showing the adjustable pack frame in an alternate configuration; and,

FIG. 8 is another front perspective view thereof, showing the adjustable pack frame in an alternate configuration.

The dashed lines shown in the drawings are for environmental purposes only and form no part of the claimed design.

Members of the adjustable pack frame are shown broken away to indicate that they have no specific length other than what is shown. 

CLAIM The ornamental design for an adjustable pack frame, as shown and described. 